Printing-telegraph system



(No Model.) 2 Sheets-She et- 1.

J. 0. WILSON. PRINTING TELEGRAPH SYSTEM.

No. 352,435. Patented Nov. 9, 1886.

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2 Sheets- Sheet 2.

(No Model.)

J. 0. WILSON.

PRINTING TELEGRAPH SYSTEM.

Patented Nov. 9, 1886.

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JOHN C. \VILSON, OF BOSTON, MASSACHUSETTS.

PRINTING-TELEGRAPH SYSTEM.

EPECIPICATION forming part of Letters Patent No. 352,435, dated November9, 1886.

Application filed January 4, 1886.

To all whom, it may concern:

Be it known that I, JOHN O. WVILsON, ofBoston, county of Suffolk, andState of Massachw setts, have invented an Improvement in Systems ofTransmitting Stock-Quotations from a Central Office, of which thefollowing description, in connection with the accompanying drawings, isa specification, like letters on the drawings representing like parts.

This invention has for its object to provide suitable instruments andarrangement of circuits, whereby stock-quotations may be transmittedfrom a main oliice over a main line, and at intervals or sub-stationsalong the main line be automatically repeated, that they may bereceivedupon one or more stock-tickers placed in the vicinity of eachsub-stati on.

In carrying out this invention I employ at the main station a singletransmitter comprising co-operating devices to transmit impulses ofopposite polarity immediately followed by an impulse of varyingintensity over a main line, and atintervals or sub-stations, as they maybetermed,alongthemainline,lhave interposed suitable relays, respectivelyresponsive to such impulses. The magnets respectively controlling themovements of the type-wheel and the operationof the printing mechanismof the several stock-tickers located in the vicinity of any one of thesubstations are connected in local circuits respectively controlled bythe arinatures of the relays at the sub-stations, so that as the relaysat the sub-stations respond to the transmitter at the main office theyin turn cause the magnets of the stock-tickers to similarly respond,thereby automatically re peating the quotation, that it may be receivedby the stock-tickers directly from the main office without theassistance of any retransmission at any point, as now frequentlypracticed.

Figure 1 shows a diagram of a system for sending stock-quotationsdirectly froma main or transmitting station to the local stocktickers;Fig. 2, a cross-section of the transmitting device shown in Fig. 1, andtaken on the dotted line m 00, and Fig.8 a plan view of a stock-tickerwhich may be used in connection with this system.

The transmitter A, located at the main or transmitting station-as, forinstance, at New Serial No. 187,518. (No model.)

York, N. Y.containing the main roll a, having stops or projections aabout its'periphery,

the levers a, motor a to rotate the main roll nects the transmittingdevice with the main ment of one of the studs or projections a/upon themain roll, arrests its movement, thereby also arresting the movement ofthe commutator. lVhile the main roll is rotating im pulses of oppositepolarity pass over the main cuit connecting the pen or contact-piece 0,

bearing upon the main roll a, and the wire 5 of the said circuitconnecting by means of a contact-screw, c, a conductingstrip passinglengthwise of the transmitter, and to which the contact-pieces 8 areattached, so that when one of the lovers to is depressed, and one of thestuds 4 is made-to come in contact with one of the projections to of themain roll to arrest it, the circuit is completed. The currents ofopposite polarity pass over the main line 2 and vibrate the armature eof a polarized relay, B, there preferably being several such relayslocated at intervals along the main line.

The armature e of the polarized relay is grounded and vibrates betweentwo contactpoints, 7 8, from one of which leads a local printing-circuitcontaining a local battery, B, and one 'or more magnets, as m,controlling the operation of the type-wheels of one or morestock-tickers, the said local printing-circuit terminating in a ground.A neutral re lay, O, is also connected with the main line 2, thenormally-grounded armature of which is attracted as the current passesover the line, and is released upon a reduction in the Strength of thecurrent striking the contact-point 10, from which leads a local circuitcontaining a local battery, B and one or more magnets, as m, controllingthe operation of the printing mechanism of one or more stock-tickers. aThe magnetm (see Fig. 3) controls the rockshaft m which, by theintervention of the escapement m and ratchet-wheel m rotatesthetype-whee1 m, while the magnet m, attracting its armature m forces thepaper printing mechanism against the under side of the typewheel tothereby print .a quotation indicative of the position of thetype-wheel,all as usual. The impulses to which the polarized relay responds beingreversals, the neutral relay is not affected; but when the current isweakened by short-circuiting the battery the neutral relay responds. a MIt is obvious that a suitable artificial resistance might be momentarilyinterposed to effect the neutral relay, so I do not desire to limitmyself to short-circuiting the main battery, asdescribed'. Thus it willbe seen from the previous description that currents of opposite polaritypassing over the main line control the local printing-cireuit andoperate the typewheel or wheels, while a reduction in the strength ofthe current controls the local circuit and operates the paper-printingmechanisms. a p

As shown in another portion ofthe diagram, Fig. 1, several stock-tickers(indicated by the letter S) are arranged in the same local type-wheeland paper-printing circuits, which latter are branched, as occasion mayrequir, so that at a certain city or town along the main line, if it isdesired to locate several tickers, necessitating a current having manybranches, a single polarized and neutral relay located at a convenientpoint may 0on trol them all. line a suitable resistance-coil is locatedimmediately beyond which the main line is grounded,while at thecentralofi'ice a Wheatstone bridge, w, and a rheostat, w, areinterposed, the arms of the bridge being adjusted as usual in duplextelegraphy. A relay, R, controlling a signaling device, is containedwithin the bridge, w, which is insensible to currents passing over themain line from the main station, but sensible to any change in thecircuit-as, for instance, an accidental ground-break or cross-wire,which cuts out the resistance near the end of the line, thus disturbingthe balanced condition of the circuit. It will be seen that this featureis essential, owing to the fact that, suppose the line should beaccidentally grounded midway, and a portion only of the polarized andneutral relays located at the sub-stations should operate,stock-quotations would be received at Near the end of the main;

some points and not others, and serious results might occur between thebrokers and individuals using them.

By the system herein' described a central office containing atransmitter constructed substantially as described may be located at,

say, New York, N. Y., and a main line extend therefrom to a distantpoint as, for ,instance, Boston, Massachusetts-and at intervals allalong the line a pair of relays controlling local circuits, asdescribed, may be interposed, and one or more tickers may be connectedwith the said local circuits and controlled as to their operation by therelaysas, for instance, at any one or all of the large cities and townsbetween New York and Boston-thereby obviating the necessity ofmaintai'ningat each place where it is desired to locate one or moretickers a retransmittingstation and an operator, which incurs so greatexpense as to preclude many persons from using the stock-tickers, and byretransmission of the quotation at every repeating-station, as nowpracticed, errors are liable to occur owing to the carelessness ofanoperator.

I have herein shown a permanent resistance located at the remotestation, and a relay connected with the circuit at thetransmittingstation, and means for adjusting said relay that it may beinsensible to currents passing through it from the transmitting-station,but sensible to any change in the condition of the circuit between saidrela' and the remote station containing the resis ance, to therebyinform the transmittingstation of any irregularity in the line; but suchdevices and arrangernent of the circuits I do not herein claim, as thesame form the subject matter of another application filed by me October6, 1886, Serial No. 215,466.

I claim- 1. In a system for the distribution of stockqnotations, a mainelectric circuit containing a main or transmitting station and one ormore sub-stations, a single transmitter comprising cooperating deviceslocated at the said main station that transmits impulses of oppositepolarity over the said main line, and also impulses of differentintensity, two relays located at each sub-station,- one of which isresponsive to the impulses of opposite polarity and theother responsiveto the impulses of different intensity, two local circuits respectivelycontrolled by the armatures of the "said two relays, magnets in saidlocal circuits,

and the type-wheel and paper-printing mechof the two mainbatteries-co-operating with from a single main or transmitting stationto the commutator to send impulses of opposite several sub-stations, andin automatically repolarity over the main line, a contact-piece peatingboth kinds of impulses to one or more 15 cooperating with the main roll,and a constock-tickerslocatedin the vicinity of the said ductingstrip towhich the printing-levers are sub-stations.

connected, said conducting-strip and contact- In testimony whereof Ihave signed my piece being connected by a circuit dividing name to thisspecification in the presence of the battery to thusvar'y'the intensityof the two subscribing witnesses.

current, all substantially as described. JOHN 0. WILSON.

3. The method herein described of distrib- Witnesses: utingstock-quotations,which consistsin trans- BERN. J. NoYEs, mittingimpulses of two different characters F. OUTTER.

